/**
 * Copyright (C) BFH www.bfh.ch 2011
 * Code written by: Patrick Dobler, Marc Folly
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package ch.bfh.ti.kybernetik.engine;

import javax.vecmath.Point2d;
import javax.vecmath.Vector2d;

/**
 * Vector Math Utility Class
 * 
 */
public final class VecMathUtils {

	public static Vector2d rotateVector(Vector2d directionVector, double angle) {
		double newVecX = directionVector.getX() * Math.cos(Math.toRadians(angle)) - directionVector.getY()
				* Math.sin(Math.toRadians(angle));
		double newVecY = directionVector.getX() * Math.sin(Math.toRadians(angle)) + directionVector.getY()
				* Math.cos(Math.toRadians(angle));
		Vector2d newVec = new Vector2d(newVecX, newVecY);
		newVec.normalize();
		return newVec;
	}

	public static Point2d getScaledVectorPoint(Vector2d vector, Point2d p, double size) {
		double x = p.getX() + size * vector.getX();
		double y = p.getY() + size * vector.getY();
		return new Point2d(x, y);
	}

}
